Critical9.1Fortinet Updated
Second-Order OS Command Injection via JSON Input on start vnc feature
FG-IR-26-141 Published Jun 9, 2026Updated by vendor Jun 9, 2026
CVE-2026-25089
Affected products & platforms
FortinetFortiSandbox
Summary
CVSSv3 Score: 9.1 An improper neutralization of special elements used in an OS command vulnerability [CWE-78] in FortiSandbox, FortiSandbox Cloud and FortiSandbox PaaS WEB UI may allow an unauthenticated attacker to execute unauthorized commands via specifically crafted HTTP requests. Revised on 2026-06-09 00:00:00
Affected versions
- FortiSandbox 5.0: 5.0.0 through 5.0.5
- FortiSandbox 4.4: 4.4.0 through 4.4.8
- FortiSandbox Cloud 5.0: 5.0.4 through 5.0.5
- FortiSandbox PaaS 5.0: 5.0.4 through 5.0.5
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- FortiSandbox 5.0: 5.0.6
- FortiSandbox 4.4: 4.4.9
- FortiSandbox Cloud 5.0: 5.0.6
- FortiSandbox PaaS 5.0: 5.0.6
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade per the Affected/Solution table: FortiSandbox 5.0: 5.0.6; FortiSandbox 4.4: 4.4.9; FortiSandbox Cloud 5.0: 5.0.6; FortiSandbox PaaS 5.0: 5.0.6.
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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